Micropatterning kinetics of different glass-forming systems investigated by thermoplastic net-shaping

Year: 
2017
Month: 
4
Day: 
12
Pages: 
127-131
DOI: 
10.1016/j.scriptamat.2017.02.038
Type: 
Journal Articles
Journal: 
Scripta Materialia
Volume: 
137
Abstract: 

The formability difference between good and marginal glass-forming systems is investigated by micro-surface patterning of hierarchical features using thermoplastic net-shaping (TPN). For each alloy, a remarkable change in the flow behaviour is observed as the applied force along with the pressing time and temperature are optimized. The flow kinetics of glassy alloyswith different glass-forming abilities is best described by the formability parameter S, which is defined by the ratio of thewidth of the supercooled to undercooled liquid region (Tl−Tg)/(Tx−Tg). Reproducible micro-engineered surfaces with high uniformity can be established by controlled TPN processing.